//package com.wbk.lotterysystemgateway.filter;
//
//import javax.servlet.http.HttpServletRequest;
//
///*******************************************************************************
// * @project: competition
// * @package: com.coolgua.common.util
// * @author: wbk
// * @created: 2021/4/27
// * @purpose:
// ******************************************************************************/
//public class IPUtil {
//
//    public static String getIpAddress(HttpServletRequest request){
//        String ip = request.getHeader("x-forwarded-for");
//        if (ip != null && ip.length() != 0 && !"unknown".equalsIgnoreCase(ip)) {
//            // 多次反向代理后会有多个ip值，第一个ip才是真实ip
//            if (ip.indexOf(",") != -1) {
//                ip = ip.split(",")[0];
//            }
//        }
//        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
//            ip = request.getHeader("Proxy-Client-IP");
//        }
//        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
//            ip = request.getHeader("WL-Proxy-Client-IP");
//        }
//        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
//            ip = request.getHeader("HTTP_CLIENT_IP");
//        }
//        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
//            ip = request.getHeader("HTTP_X_FORWARDED_FOR");
//        }
//        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
//            ip = request.getHeader("X-Real-IP");
//        }
//        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
//            ip = request.getRemoteAddr();
//        }
//        return ip;
//    }
//}
